My Elixir power converter in my 2006 Outfitter Apex 8 failed in exactly the same manner about 2 years ago. While I am a big fan of "Made in USA", at the time I came across the WFCO 8735 for about $120.00. It was an absolute "drop-in" replacement for the Elixir in the Apex 8. So far it has performed flawlessly and my 2 Trojan 6V batteries are much happier than they were before. I like the LED open circuit indicators on the WFCO as it is much easier to see if a fuse has blown. I don't know if it will last any shorter or longer than any other brand made anywhere else but we'll see.
Edited: BTW, the A/C should still work fine as A/C in to the Elixer provides A/C to the converter but also just feeds the A/C distribution breakers on the Elixer. None of the A/C distributed throughout the camper relies on any of the Elixer 12V portion (charging or distribution) to be functional.